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目前我正在编写一个转换为JPEG转换的模块DICOM Image。经过分析，我已经完成了标签渲染，现在图像没有在DICOM文件中正确渲染。

是否有任何算法可以JPEG将DICOM.

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4 回答 4

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继续 Matthieu 的回复，这里是使用优秀的 GDCM 库和他引用的示例为 JPEG 流创建 DICOM 信封的非常简单的方法（注意我使用了一些帮助类，但非常简单）：

       ImageReader r = new ImageReader();
        gdcm.Image image = r.GetImage();
        image.SetNumberOfDimensions(2);
        DataElement pixeldata = DataElementHelper.PixelData;
        string file1 = @"D:\testfil.jpeg";

        System.IO.FileStream infile =
            new System.IO.FileStream(file1, System.IO.FileMode.Open, System.IO.FileAccess.Read);
        //uint fsize = gdcm.PosixEmulation.FileSize(file1);

        //byte[] jstream = new byte[fsize];
        //infile.Read(jstream, 0, jstream.Length);

        byte[] jstream = System.IO.File.ReadAllBytes(file1);
        uint fsize = (uint) jstream.Length;

        SmartPtrFrag sq = SequenceOfFragments.New();
        Fragment frag = new Fragment();
        frag.SetByteValue(jstream, new gdcm.VL((uint)jstream.Length));
        sq.AddFragment(frag);
        pixeldata.SetValue(sq.__ref__());

        // insert:
        image.SetDataElement(pixeldata);


        PhotometricInterpretation pi = new PhotometricInterpretation(PhotometricInterpretation.PIType.MONOCHROME2);
        image.SetPhotometricInterpretation(pi);

        // FIXME hardcoded:
        PixelFormat pixeltype = new PixelFormat(PixelFormat.ScalarType.UINT8);
        image.SetPixelFormat(pixeltype);

        TransferSyntax ts = new TransferSyntax(TransferSyntax.TSType.JPEGBaselineProcess1);
        image.SetTransferSyntax(ts);

        image.SetDimension(0, (uint)1700);
        image.SetDimension(1, (uint)2200);

        ImageWriter writer = new ImageWriter();
        gdcm.File file = writer.GetFile();


        var ds = file.GetDataSet();
        DataElement patientID = DataElementHelper.PatientID;
        DataElement patientName = DataElementHelper.PatientName;
        DataElement accessionNumber = DataElementHelper.AccessionNumber;
        DataElement studyDate = DataElementHelper.StudyDate;
        DataElement studyTime = DataElementHelper.StudyTime;
        DataElement studyInstanceUID = DataElementHelper.StudyInstanceUID;
        DataElement seriesInstanceUID = DataElementHelper.SeriesInstanceUID;
        DataElement mediaStorage = DataElementHelper.SOPClassUID;

        string studyUID = new gdcm.UIDGenerator().Generate();
        string seriesUID = new gdcm.UIDGenerator().Generate();

        //pixelData.SetArray(b, (uint)b.Length);
        DataElementHelper.SetDataElement(ref patientName, "TEST^MARCUS");
        DataElementHelper.SetDataElement(ref patientID, "0000000801");
        DataElementHelper.SetDataElement(ref accessionNumber, "0000000801-12345");
        DataElementHelper.SetDataElement(ref studyDate, DateTime.Now.ToString("yyyyMMdd"));
        DataElementHelper.SetDataElement(ref studyTime, DateTime.Now.ToString("HHmmss"));
        DataElementHelper.SetDataElement(ref studyInstanceUID, studyUID);
        DataElementHelper.SetDataElement(ref seriesInstanceUID, seriesUID);
        DataElementHelper.SetDataElement(ref mediaStorage, "1.2.840.10008.5.1.4.1.1.7");
        ds.Insert(patientID);
        ds.Insert(patientName);
        ds.Insert(accessionNumber);
        ds.Insert(studyDate);
        ds.Insert(studyTime);
        ds.Insert(studyInstanceUID);
        ds.Insert(seriesInstanceUID);
        ds.Insert(mediaStorage);

        writer.SetImage(image);
        writer.SetFileName("gdcm_test.dcm");
        bool ret = writer.Write();
于 2015-09-19T18:03:59.667 回答
1

please have a look at the mdcm C# DICOM library, originally written by Colby Dillion. He has developed managed C++ "bridges" to the IJG/LibJPEG and OpenJPEG code bases, so mdcm provides both 8/12/16-bit lossy and lossless JPEG support as well as JPEG-2000 support.

Colby's original library has WinForms dependencies. I have created a Silverlight and WPF targeted fork of mdcm here. The WPF version of the library can fully utilize the same JPEG(-2000) codecs that Colby originally implemented.
The Silverlight version on the other hand currently cannot benefit from these codecs. I have made some attempts to apply the FJCore and LibJpeg.Net libraries for lossy JPEG support in Silverlight, but these libraries only support 8-bit images at the moment.

Regards,
Anders @ Cureos

于 2011-09-30T09:47:13.347 回答
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您不需要将 JPEG“转换”为 DICOM。DICOM 只是 JPEG 流的“信封”。这是我在 GDCM 中封装（=放入 DICOM 信封）现有 MPEG2 文件的操作：

http://gdcm.sourceforge.net/html/MpegVideoInfo_8cs-example.html

只需将该代码调整为输入 JPEG 文件即可。例如看看：

http://gdcm.sourceforge.net/html/DecompressJPEGFile_8cs-example.html

不需要解压缩/重新压缩，那会浪费资源。

于 2012-12-06T16:30:34.230 回答
0

.NET 本身没有支持 DICOM 的功能。您将需要使用库。我不知道有什么免费的，但我使用了 LeadTools，它会做到（收费）。但我只会给它一个 4/10，我会重新开始你寻找其他选择。

于 2011-09-30T06:38:52.847 回答